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Add notes and deploy script

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This commit is contained in:
Nikola Petrov
2026-03-30 16:59:53 +02:00
parent 601ead1fd9
commit 94817f8cc0
33 changed files with 943 additions and 650 deletions
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---
tags:
- General
title : Android Studio
description : Notes
date : 2025-01-01
author : Nikola Petrov
draft : true
---
https://developer.android.com/studio/run/emulator-acceleration?utm_source=android-studio-app&utm_medium=app#vm-linux
https://developer.android.com/studio/install#linux
https://developer.android.com/studio
https://askubuntu.com/questions/298857/how-to-add-android-studio-to-the-launcher

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---
tags:
- General
title: Connect MPI system over SSH for Dummy
description: How to setup MPI system over SSH
date: 2025-01-01
author: Nikola Petrov
draft: false
---
1. On all computers
```bash
sudo apt install openssh-client
sudo apt install openssh-server
sudo apt install openmpi-bin libopenmpi-dev
```
2. Disable firewall
```bash
sudo ufw status
sudo ufw disable
```
3. Try connecting master to every slave ( you will need password )
```bash
ssh user@ipslave1
ssh user@ipslave2
```
4. On master generate a key and put it on the slaves
```bash
ssh-keygen -t rsa
ssh-copy-id user@ipslave1
ssh-copy-id user@ipslave2
```
5. Try connecting master to every slave ( you will not need password )
```bash
ssh user@ipslave1
ssh user@ipslave2
```
6. Compile program
```bash
mpicc main.c -o main
mpic++ main.cpp -o main
```
7. Copy main in to /tmp folder for easy same location ( program needs to be in the same path on all computers )
```bash
cp /path/to/main /tmp/mympiprogram/
```
8. Copy program to all computers
- Could use NFS server for auto copy
```bash
scp <source> <destination>
scp /tmp/mympiprogram/main user@ipslave1:/tmp/mympiprogram/main
scp /tmp/mympiprogram/main user@ipslave2:/tmp/mympiprogram/main
```
9. Run program
- `num < c1 + c2 + c3`
- c1 is number of processes that can run on the computer
- num is number of processes that are needed for the program
```bash
mpirun -np <num> --host 127.0.0.1:<c1>,ipslave1:<c2>,ipslave2<c3> /tmp/mympiprogram/main
```
10. Enable firewall
```bash
sudo ufw status
sudo ufw enable
```

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---
tags:
- General
title: Firefox
description: Notes
date: 2025-01-01
author: Nikola Petrov
draft: true
---
Theme:
https://github.com/soulhotel/FF-ULTIMA
| Command | Shortcut |
| ------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| New Tab | Ctrl + T |
| Close Tab | Ctrl + W |
| Close Window | Ctrl + Shift + W |
| Exit | Ctrl + Shift + Q |
| Go one Tab to the Left | Ctrl + Shift + Tab |
| Go one Tab to the Right | Ctrl + Tab |
| New [Private Window](https://support.mozilla.org/en-US/kb/private-browsing-use-firefox-without-history) | Ctrl + Shift + P |
| Go to Tab 1 to 8 | Ctrl + 1 to 8 |
| Go to Last Tab | Ctrl + 9 |
| Move Tab Left | Ctrl + Shift + Page Up |
| Move Tab Right | Ctrl + Shift + Page Down |
| [Mute/Unmute Audio](https://support.mozilla.org/en-US/kb/mute-sound-firefox-tabs) | Ctrl + M |
| New Window | Ctrl + N |
| Reopen last closed tab or window | Ctrl + Shift + T <br>**Note:**Reopens last closed tab or window, in the order closed. If there aren't any tabs or windows to reopen, this command restores the previous session. |
| Focus [Search bar](https://support.mozilla.org/en-US/kb/add-search-bar-firefox-toolbar) | Ctrl + K <br>Ctrl + E |
| [Bookmarks](https://support.mozilla.org/en-US/kb/bookmarks-firefox) sidebar | Ctrl + B |
| Show/hide the Bookmarks toolbar | Ctrl + Shift + B |
| Focus Address Bar | Ctrl + L |
For X11 to enable swipe to back
Add to .profile for back swipe then log out
```
export MOZ_USE_XINPUT2=1
```

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---
tags:
- General
title : QimGv
description : Notes
date : 2025-01-01
author : Nikola Petrov
draft : true
---
App for photos
https://github.com/easymodo/qimgv
| Action | Shortcut |
| -------------------------- | ---------------------------------------- |
| Next image | Right arrow / MouseWheel |
| Previous image | Left arrow / MouseWheel |
| Goto first image | Home |
| Goto last image | End |
| Zoom in | Ctrl+MouseWheel / Crtl+Up |
| Zoom out | Ctrl+MouseWheel / Crtl+Down |
| Zoom (alt. method) | Hold right mouse button & move up / down |
| Fit mode: window | 1 |
| Fit mode: width | 2 |
| Fit mode: 1:1 (no scaling) | 3 |
| Switch fit modes | Space |
| Toggle fullscreen mode | DoubleClick / F / F11 |
| Exit fullscreen mode | Esc |
| Show EXIF panel | I |
| Crop image | X |
| Resize image | R |
| Rotate left | Ctrl+L |
| Rotate Right | Ctrl+R |
| Open containing directory | Ctrl+D |
| Slideshow mode | ~ |
| Shuffle mode | Ctrl+~ |
| Quick copy | C |
| Quick move | M |
| Move to trash | Delete |
| Delete file | Shift+Delete |
| Save | Ctrl+S |
| Save As | Ctrl+Shift+S |
| Folder view | Enter / Backspace |
| Open | Ctrl+O |
| Print / Export PDF | Ctrl+P |
| Settings | P |
| Exit application | Esc / Ctrl+Q / Alt+X / MiddleClick |

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---
tags:
- General
title : Tmux
description : Notes
date : 2025-01-01
author : Nikola Petrov
draft : true
---
https://www.geeksforgeeks.org/tmux-in-linux/
|Key|Description|
|---|---|
|Ctrl+B D|It will detach from the current session.|
|Ctrl+B %|It will split the window into two panes horizontally.|
|Ctrl+B "|It will split the window into two panes vertically.|
|Ctrl+B Arrow Key (Left, Right, Up, Down)|It helps in moving between panes.|
|Ctrl+B N or P|It helps in switching the next or previous window.|
|Ctrl+B C|It will create a new window.|
|Ctrl+B X|It will close the pane|
|Ctrl+B 0 (1,2...)|It will move to the particular window by number.|
|Ctrl+B :|Enter the command line to type commands.|
|Ctrl+B ?|It will display all key bindings.|
|Ctrl+B W|It opens a panel to navigate across windows in multiple sessions.|
```
tmux ls
->
0: 1 windows (created Wed Mar 5 23:03:01 2025)
```
```
tmux a
```

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---
tags:
- General
title : VSCodium
description : Notes
date : 2025-01-01
author : Nikola Petrov
draft : true
---
https://vscodium.com/#install-on-debian-ubuntu-deb-package
### platform_io
```
sudo apt install python3-venv
sudo usermod -a -G tty $USER
sudo usermod -a -G dialout $USERNAME
```
#### arduino debuging
https://www.youtube.com/watch?v=7wx27FcluMg
### C/C++ debuging
```
sudo apt install gdb
```
https://rookiehpc.org/index.html

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---
tags:
- General
title : Job notes
description : Notes for job search
date : 2026-03-01
author : Nikola Petrov
---
##### Introduction
Pozdravljeni,
sem Nikola Petrov, končujem študij Računalništvo in informacijske tehnologije in trenutno čakam na zagovor diplome.
Vaš oglas me je zelo pritegnil, ker me to področje še posebej zanima. Zato se z velikim interesom prijavljam na razpisano delovno mesto.
Prav tako tudi že imam nekaj delovnih izkušenj na tem področju, kar je razvidno v priloženem CV v priponki.
Vesel bom vašega povabila na razgovor.
Lep pozdrav
Nikola Petrov
##### Tell us why do you think you are the right person for this position?
My background in computer science and hands-on experience in software development align closely with the key requirements of this position. At RRC d.o.o., I worked as a full-stack developer, where I utilized Java, JavaScript, and SQL to build and maintain robust applications and databases. My ability to quickly learn new technologies and adapt to evolving challenges allows me to contribute effectively to your team’s success.
##### Do you have a question for us
Ok recimo čez eno leto ko sem že sprejet kaj bi moral jaz narediti da bi vi rekli da sem jaz bil dobra odločitev
##### Why company
I prefer working on-site, and your office’s proximity to my home makes [company] an ideal fit. I’ve also heard great things about your company culture and am excited by the opportunity to contribute to your team.

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---
tags:
- General
title : Linux utils
description : Utils for linux
date : 2025-01-02
author : Nikola Petrov
---
### .desktop file location
```bash
~/.local/share/applications
/usr/share/applications
```
### nvim
The [Releases](https://github.com/neovim/neovim/releases) page provides pre-built binaries for Linux systems.
```bash
curl -LO https://github.com/neovim/neovim/releases/latest/download/nvim-linux64.tar.gz
sudo rm -rf /opt/nvim
sudo tar -C /opt -xzf nvim-linux64.tar.gz
```
After this step add this to `~/.bashrc`:
```bash
export PATH="$PATH:/opt/nvim-linux64/bin"
```
For sudo acces
```bash
sudo ln -s /opt/nvim-linux64/bin/nvim /usr/bin/
```
### Open default file explorer
```bash
xdg-open .
```
### See memory usage
```bash
htop
```
### Find
```bash
find -name <file_name> # Search files by name
find -type d -name <file_name> # Search directory name
```
### To upgrade all
```bash
sudo apt-get upgrade
```
### zoxide better cd
https://github.com/ajeetdsouza/zoxide
### git
```bash
git config --global user.name "Nikola Petrov"
git config --global user.email "nikola@petrovv.com"
```
### ffmpeg convert JPG to video
```bash
ffmpeg -framerate 30 -pattern_type glob -i '*.JPG' -c:v libx264 -pix_fmt yuv420p -s 1920x1080 -r 30 video.mp4
```
### tmux
https://github.com/tmux/tmux/wiki/Installing
### Gparted
for formating disks
### rfm-bin
https://github.com/dsxmachina/rfm
https://github.com/sharkdp/bat
### PopOS 22 to disable appstore auto start up and save 0,5 GB ram
```bash
sudo dpkg-divert --divert "/etc/xdg/autostart/io.elementary.appcenter-daemon.desktop.~ram~" --rename "/etc/xdg/autostart/io.elementary.appcenter-daemon.desktop"
```
### Gnome to change back ground img size to zoom
```bash
sudo apt install gnome-tweaks
```
Appearance -> Background Adjusment -> Scaled
### PopOS 22 Mouse pad right click
Enable in settings -> Mouse & Touchpad -> Touchpad Click Options -> Second option
### AudioControll
```bash
sudo apt install pavucontrol
```
### .tar
```bash
tar -cf archive_name.tar /path/to/dir
tar -xf archive_name.tar
```
### .tar.gz
```bash
tar -czf archive_name.tar.gz /path/to/dir
tar -xzf yourfile.tar.gz
```
### sync two dirs
```
unison /path/to/dir/one /path/to/dir/two
```

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---
tags:
- Server
title : Caddy
description : Caddy
date : 2025-01-01
author : Nikola Petrov
---
https://caddyserver.com/docs/
### Install
```
sudo apt install -y debian-keyring debian-archive-keyring apt-transport-https curl
curl -1sLf 'https://dl.cloudsmith.io/public/caddy/stable/gpg.key' | sudo gpg --dearmor -o /usr/share/keyrings/caddy-stable-archive-keyring.gpg
curl -1sLf 'https://dl.cloudsmith.io/public/caddy/stable/debian.deb.txt' | sudo tee /etc/apt/sources.list.d/caddy-stable.list
sudo apt update
sudo apt install caddy
```
### Change privilege to access port 80 and 443
```
sudo setcap cap_net_bind_service=+ep $(which caddy)
```
### Caddyfile
/etc/caddy/Caddyfile
```
petrovv.com {
reverse_proxy * 0.0.0.0:4080
}
lang.petrovv.com {
reverse_proxy * 0.0.0.0:8010
}
vault.petrovv.com {
reverse_proxy * 0.0.0.0:6080
}
git.petrovv.com {
reverse_proxy * 0.0.0.0:3000
}
game.petrovv.com {
reverse_proxy * 0.0.0.0:8080
}
rss.petrovv.com {
reverse_proxy * 0.0.0.0:8082
}
files.petrovv.com {
root * /srv
file_server browse
}
```
### comands
```
caddy start
caddy stop
caddy reload
```

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---
tags:
- Server
title : Containers
description : containers on my server
date : 2025-01-01
author : Nikola Petrov
---
## languagetool
```sh
podman pull docker.io/erikvl87/languagetool:latest
podman run --restart=always -d -p 8010:8010 --name languagetool-cont docker.io/erikvl87/languagetool
```
```ini
#/etc/containers/systemd/languagetool.container
[Unit]
Description=LanguageTool Container
After=network.target
[Container]
Image=docker.io/erikvl87/languagetool
Name=languagetool-cont
PublishPort=8010:8010
Environment=Java_Xms=512m
Environment=Java_Xmx=2g
Restart=always
[Install]
WantedBy=default.target
```
## vaultwarden
```sh
podman pull docker.io/vaultwarden/server:latest
podman run -d --restart=always -e SIGNUPS_ALLOWED=false -v /root/vaultwarden/:/data/ -p 6080:80 --name vaultwarden-cont vaultwarden/server:latest
```
```ini
#/etc/containers/systemd/vaultwarden.container
[Unit]
Description=Vaultwarden (Bitwarden-Compatible Server)
After=network.target
[Container]
Image=vaultwarden/server:latest
Name=vaultwarden-cont
PublishPort=6080:80
Volume=/root/vaultwarden/:/data
Environment=SIGNUPS_ALLOWED=false
Restart=always
[Install]
WantedBy=default.target
```
## CALENDAR

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---
tags:
- Server
title : Nginx
description : Nginx
date : 2025-01-01
author : Nikola Petrov
---
### Install
```
sudo apt update
sudo apt install nginx
```
### Test config
```
sudo nginx -t
```
### Config location
```
/etc/nginx
```
### Restart
```
sudo service nginx restart
```
### Template for reverse proxy
```
server{
listen 80;
listen [::]:80;
server_name _;
location / {
proxy_pass http://127.0.0.1:8000;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
}
}
```
## For auto ssl/https
- Install snapstore
```
sudo apt update
sudo apt install snapd
```
- remove old certbot
```
sudo apt-get remove certbot
```
- Install certbot
```
sudo snap install --classic certbot
```
- Link command to /usr/bin
```
sudo ln -s /snap/bin/certbot /usr/bin/certbot
```
- Get and install cert
```
sudo certbot --nginx
```
- Test auto renewal
```
sudo certbot renew --dry-run
```

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---
tags:
- Server
title : Commafeed
description : Commafeed
date : 2025-01-01
author : Nikola Petrov
---
https://www.commafeed.com/#/welcome
config
```
commafeed.http-client.max-response-size=10M
commafeed.feed-refresh.max-interval=24H
commafeed.feed-refresh.force-refresh-cooldown-duration=10S
commafeed.database.cleanup.entries-max-age=0
commafeed.database.cleanup.max-feed-capacity=0
```

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---
tags:
- Server
title : Server notes
description : Server notes
date : 2025-01-01
author : Nikola Petrov
---
## To prevent updating of a specific package?
Hold a package:
sudo apt-mark hold <package-name>
Remove the hold:
sudo apt-mark unhold <package-name>
Show all packages on hold:
sudo apt-mark showhold
### USE APT PURGE TO REMOVE APPS
## Dynamic DNS
DDClient [YouTube](https://www.youtube.com/watch?v=iuDCuUEmKF4) [NameCheap](https://www.namecheap.com/support/knowledgebase/article.aspx/583/11/how-do-i-configure-ddclient/)
Install & Setup Instructions:
sudo apt-get install ddclient
sudo nano /etc/ddclient.conf
daemon=3600
ssl=yes
protocol=dyndns2
use=web, web=myip.dnsomatic.com
server=updates.dnsomatic.com
login=Your OpenDNS login
password=Your OpenDNS Password
all.dnsomatic.com
sudo nano /etc/default/ddclient
run_ipup="false"
run_daemon="true"
daemon_interval=3600
To run it initially: sudo ddclient -daemon=0 -debug -verbose -noquiet
## Shutdown
```
systemctl reboot
systemctl poweroff
```
## Raid
https://linuxconfig.org/linux-software-raid-1-setup
## ssh
in `~/.ssh/authorized_keys` paste your pub key
and then disable password login in `/etc/ssh/sshd_config` change `PasswordAuthentication`
to `no`
```
ssh-keygen -t ed25519
systemctl reload sshd
```
## Network monitor tool
`vnstat --help`
## python venv in debian
```sh
sudo apt install -y python3-full python3-pip
python -m venv venv
```

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---
tags:
- Server
title : Systemctl tutorial
description : Systemctl
date : 2025-01-01
author : Nikola Petrov
---
Copy of https://bun.com/docs/guides/ecosystem/systemd
[systemd](https://systemd.io) is an init system and service manager for Linux operating systems that manages the startup and control of system processes and services.
<!-- systemd provides aggressive parallelization capabilities, uses socket and D-Bus activation for starting services, offers on-demand starting of daemons, keeps track of processes using Linux control groups, maintains mount and auto mount points, and implements an elaborate transactional dependency-based service control logic. systemd supports SysV and LSB init scripts and works as a replacement for sysvinit. -->
<!-- Other parts include a logging daemon, utilities to control basic system configuration like the hostname, date, locale, maintain a list of logged-in users and running containers and virtual machines, system accounts, runtime directories and settings, and daemons to manage simple network configuration, network time synchronization, log forwarding, and name resolution. -->
---
To run a Bun application as a daemon using **systemd** you'll need to create a _service file_ in `/etc/systemd/system/`.
```sh
$ cd /etc/systemd/system
$ touch my-app.service
```
---
Here is a typical service file that runs an application on system start. You can use this as a template for your own service. Replace `YOUR_USER` with the name of the user you want to run the application as. To run as `root`, replace `YOUR_USER` with `root`, though this is generally not recommended for security reasons.
Refer to the [systemd documentation](https://www.freedesktop.org/software/systemd/man/systemd.service.html) for more information on each setting.
```ini
[Unit]
# describe the app
Description=My App
# start the app after the network is available
After=network.target
[Service]
# usually you'll use 'simple'
# one of https://www.freedesktop.org/software/systemd/man/systemd.service.html#Type=
Type=simple
# which user to use when starting the app
User=YOUR_USER
# path to your application's root directory
WorkingDirectory=/home/YOUR_USER/path/to/my-app
# the command to start the app
# requires absolute paths
ExecStart=/home/YOUR_USER/.bun/bin/bun run index.ts
# restart policy
# one of {no|on-success|on-failure|on-abnormal|on-watchdog|on-abort|always}
Restart=always
[Install]
# start the app automatically
WantedBy=multi-user.target
```
---
If your application starts a webserver, note that non-`root` users are not able to listen on ports 80 or 443 by default. To permanently allow Bun to listen on these ports when executed by a non-`root` user, use the following command. This step isn't necessary when running as `root`.
```bash
$ sudo setcap CAP_NET_BIND_SERVICE=+eip ~/.bun/bin/bun
```
---
With the service file configured, you can now _enable_ the service. Once enabled, it will start automatically on reboot. This requires `sudo` permissions.
```bash
$ sudo systemctl enable my-app
```
---
To start the service without rebooting, you can manually _start_ it.
```bash
$ sudo systemctl start my-app
```
---
Check the status of your application with `systemctl status`. If you've started your app successfully, you should see something like this:
```bash
$ sudo systemctl status my-app
● my-app.service - My App
Loaded: loaded (/lib/systemd/system/my-app.service; enabled; preset: enabled)
Active: active (running) since Thu 2023-10-12 11:34:08 UTC; 1h 8min ago
Main PID: 309641 (bun)
Tasks: 3 (limit: 503)
Memory: 40.9M
CPU: 1.093s
CGroup: /system.slice/my-app.service
└─309641 /home/YOUR_USER/.bun/bin/bun run /home/YOUR_USER/application/index.ts
```
---
To update the service, edit the contents of the service file, then reload the daemon.
```bash
sudo systemctl daemon-reload
```
---
For a complete guide on the service unit configuration, you can check [this page](https://www.freedesktop.org/software/systemd/man/systemd.service.html). Or refer to this cheatsheet of common commands:
```bash
$ sudo systemctl daemon-reload # tell systemd that some files got changed
$ sudo systemctl enable my-app # enable the app (to allow auto-start)
$ sudo systemctl disable my-app # disable the app (turns off auto-start)
$ sudo systemctl start my-app # start the app if is stopped
$ sudo systemctl stop my-app # stop the app
$ sudo systemctl restart my-app # restart the app
```
## See logs
https://www.linode.com/docs/guides/how-to-use-journalctl/
https://www.loggly.com/ultimate-guide/using-journalctl/
```
sudo journalctl -u my-app.service
journalctl --vacuum-time=2d // clear
journalctl --since "1 hour ago" -u my-app.service
journalctl -u my-app.service -n 100 // last 100
```

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---
tags:
- Server
title : Server
description : Server notes
date : 2025-01-01
author : Nikola Petrov
---

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---
tags:
- Server
title : Gitea
description : Gitea
date : 2025-01-01
author : Nikola Petrov
---
https://docs.gitea.com/installation/install-from-binary

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---
tags:
- Server
title : Podman
description : Podman
date : 2025-01-01
author : Nikola Petrov
---
https://podman.io/docs/installation
### install
```
sudo apt-get -y install podman
```
https://docs.podman.io/en/latest/
https://github.com/containers/podman/blob/main/docs/tutorials/podman_tutorial.md
sudo podman ps -a
sudo podman container ls
sudo podman ps
sudo podman container rm
sudo podman image ls
sudo podman image rm
https://docs.podman.io/en/latest/markdown/podman-systemd.unit.5.html